Answer by Blasanka for Why use getters and setters/accessors?

Getters and setters coming from data hiding. Data Hiding means We are hiding data from outsiders or outside person/thing cannot access our data.This is a useful feature in OOP.

As a example:

If you create a public variable, you can access that variable and change value in anywhere(any class). But if you create as private that variable cannot see/access in any class except declared class.

public and private are access modifiers.

So how can we access that variable outside:

This is the place getters and setters coming from. You can declare variable as private then you can implement getter and setter for that variable.

Example(Java):

private String name;public String getName(){   return this.name;}public void setName(String name){   this.name= name;}

Advantage:

When anyone want to access or change/set value to balance variable, he/she must have permision.

//assume we have person1 object//to give permission to check balanceperson1.getName()//to give permission to set balanceperson1.setName()

You can set value in constructor also but when later on when you wantto update/change value, you have to implement setter method.